icons: update material codepoints

[bim9262]

No description provided.

[ammgws]

@bim9262 Shall we go ahead with this?

and do we need to remove/update this in the docs or is this PR separate to that issue?

i3status-rust/doc/themes.md

Line 78 in 4558633

**Note**: In order to use the material icon set, you need a patched material icons font which can be found [here](https://gist.github.com/draoncc/3c20d8d4262892ccd2e227eefeafa8ef/raw/3e6e12c213fba1ec28aaa26430c3606874754c30/MaterialIcons-Regular-for-inline.ttf). Make sure to pass it in your i3 configuration bar block.

[bim9262]

@ammgws I'm ok to update the codepoints. I'm not sure about that comment though. I imagine it would depend on your distro and if material fonts are available out of the box on that distro?